Write the expression using exponents.





A. 6
B. 6
C. 6
D. 5
Answer: A
Mathematics
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Find the area of the specified region.Inside the circle r = 2 cos ? + 9 sin ?
A.
B. + 9
C. 9?
D.
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Find the vertex of the parabola.y = 4x2 + 2x - 9
A. (-0.5, -10) B. (0.25, -9.25) C. (-0.25, -9.25) D. (-0.25, -8.5)
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Give the domain, range, or period, as requested.Domain of y = sec x
A. x ? ?n
B. x = ?n
C. x ? + ?n
D. -? < x < ?
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Determine whether the given ordered pair is a solution to the given equation.(19, 23); y =
A. yes B. no
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